Defensive publication

ABSTRACT

PHOTOCONDUCTIVE YLID COMPOUNDS HAVING THE FORMULA:   9-(AR1-Z(+)(-AR2)(-AR3)-),R1,R2-FLUORENE   WHEREIN R1 AND R2 ARE EACH AN ALKYL RADICAL, AN ALKOXY RADICAL, AN ARYL RADICAL, A CYANO RADICAL, A HALOGEN ATOM OR A HYDROGEN ATOM; AR1, AR2 AND AR3 ARE EACH ARYL RADICALS; AND Z IS A GROUP VA ELEMENT, ARE USEFUL IN ELECTROGRAPHIC ELEMENTS. USEFUL ELEMENTS ARE COMPRISED OF A CONDUCTIVE SUPPORT HAVING THEREON A LAYER OF A PHOTOCONDUCTIVE COMPOSITION COMPRISED OF AN ELECTRICALLY INSULATING, FILM-FORMING ORGANIC BINDER AND AN YLID COMPOUND OF THE ABOVE FORMULA.

DEFENSIVE PUELTEATTUN UNITED STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969, 869 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. The heading of each abstract indicates the number of pages of specification, including claims and sheets of drawings contained in the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Ofllce makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED AUG. 1, 1972 T90L16 PHOTUCONDUCTIVE COMPOSITIONS AND ELEMENTS Rein Virkhaus, Eastman Kodak Co., Kodak Park Division, 1669 Lake Ave., Rochester, N.Y. 14650 Filed Dec. 20, 1971, Ser. No. 2.1il,129 Int. Cl. G03g 5/06 US. Cl. 96-1.5 No Drawing. 21 Pages Specification Photoconductive ylid compounds having the formula:

wherein R and R are each an alkyl radical, an alkoxy radical, an aryl radical, a cyano radical, a halogen atom or a hydrogen atom; Ar Ar and Ar, are each aryl radicals; and Z is a Group Va element, are useful in electrographic elements. Useful elements are comprised of a conductive support having thereon a layer of a photoconductive composition comprised of an electrically insulating, film-forming organic binder and an ylid compound of the above formula. 

